[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:2986":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":11,"synid":11,"polytypeof":11,"groupid":11,"weighting":12,"nolocadd":13,"blacklisted":13,"mindat_formula":14,"mindat_formula_note":11,"ima_formula":15,"elements":16,"sigelements":24,"key_elements":25,"impurities":11,"cim":26,"ima_status":27,"ima_notes":11,"ima_history":11,"approval_year":29,"publication_year":11,"discovery_year":30,"strunz10ed1":31,"strunz10ed2":32,"strunz10ed3":33,"strunz10ed4":34,"dana8ed1":35,"dana8ed2":36,"dana8ed3":37,"dana8ed4":38,"csystem":39,"cclass":40,"spacegroup":11,"spacegroupset":41,"a":42,"b":43,"c":44,"alpha":41,"beta":41,"gamma":41,"aerror":45,"berror":46,"cerror":47,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":45,"csmetamict":13,"commentcrystal":48,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":11,"tlform":11,"hmin":49,"hmax":49,"hardtype":11,"vhnmin":41,"vhnmax":41,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":50,"dmeas2":51,"dcalc":52,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":11,"lustretype":53,"commentluster":54,"diapheny":55,"streak":56,"colour":57,"commentcolor":11,"colors":58,"streak_colors":65,"luminescence":11,"uv":11,"cleavage":11,"cleavagetype":11,"fracturetype":11,"tenacity":11,"commentbreak":11,"opticaltype":66,"opticalsign":67,"opticalalpha":68,"opticalalpha2":69,"opticalalphaerror":11,"opticalbeta":70,"opticalbeta2":71,"opticalbetaerror":11,"opticalgamma":72,"opticalgamma2":73,"opticalgammaerror":11,"opticalomega":41,"opticalomega2":41,"opticalomegaerror":11,"opticalepsilon":41,"opticalepsilon2":41,"opticalepsilonerror":11,"opticaln":41,"opticaln2":41,"opticalnerror":11,"optical2vcalc":74,"optical2vcalc2":75,"optical2vcalcerror":11,"optical2vmeasured":76,"optical2vmeasured2":41,"optical2vmeasurederror":11,"rimin":77,"rimax":78,"opticaldispersion":79,"opticalpleochroism":80,"opticalpleochorismdesc":81,"opticalbirefringence":11,"opticalcomments":11,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":11,"opticalr":11,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":11,"other":11,"industrial":11,"occurrence":11,"otheroccurrence":11,"type_specimen_store":82,"description_short":83,"aboutname":84,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":85,"reviewed_at":11,"variety_of":11,"varieties":86,"group_members":87,"associates":88,"confused_with":89,"type_localities":90,"occurrence_total":47,"citations":97,"images":106,"structures":117,"synonyms":124,"language_names":127,"wikidata_qid":146,"texts":147},2986,"1:1:2986:1","9f47f806-0411-42f3-b64b-d90d463c5910","Olmsteadite","Osd",0,"mineral",null,64,false,"KFe\u003Csup>2+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>(Nb\u003Csup>5+\u003C\u002Fsup>,Ta\u003Csup>5+\u003C\u002Fsup>)(PO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>O\u003Csub>2\u003C\u002Fsub>·2H\u003Csub>2\u003C\u002Fsub>O","KFe\u003Csup>2+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>NbO\u003Csub>2\u003C\u002Fsub>(PO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 2H\u003Csub>2\u003C\u002Fsub>O",[17,18,19,20,21,22,23],"Fe","Nb","Ta","O","P","K","H",[17,18,20,21,22,23],[18],"22.5.13",[28],"APPROVED",1974,"1974","8","D","J","05","42","7","11","1","Orthorhombic",6,"0","7.512","10.000","6.492",1,3,2,"Space Group: P b21m",4,"3.31","3.36","3.41","Sub-Adamantine","may be bronzy","Translucent","Olive-green","Deep brown, red-brown to black",[59,60,61,62,63,64],"brown","red","black","blue","green","yellow",[63],"Biaxial","+","1.725","1.765","1.755","1.775","1.815","1.835","46","74","60",1.725,1.835,"r > v moderate","Visible","X = blue-green or dark blue; Y = yellow or light brown; Z = brown to dark brown.","National Museum of Natural History, Washington, D.C., USA, 135924.","The Fe analogue of johnwalkite.","Named in 1976 by Paul Brian Moore, Takaharu Araki, Anthony R. Kampf, and Ian M. Steele in honor of Milo C. Olmstead [December 5, 1909, Gillett Grove, Iowa, USA - June 4, 2005, Rapid City, South Dakota, USA], amateur collector of microscopic minerals, who called attention to the mineral.\r\n","2025-08-11 12:14:22",[],[],[],[],[91],{"id":92,"txt":93,"latitude":94,"longitude":95,"country":96},4105,"Big Chief Mine, Glendale, Keystone Mining District, Pennington County, South Dakota, USA",43.865,-103.3819444,"USA",[98,102],{"id":99,"year":100,"html":101,"doi":11},526591,1976,"Moore, Paul B., Araki, Takaharu, Kampf, Anthony R., Steele, Ian M. (1976) Olmsteadite, K\u003Csub>2\u003C\u002Fsub>Fe\u003Csup>2+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>[Fe\u003Csup>2+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>(Nb,Ta)\u003Csup>5+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>O\u003Csub>4\u003C\u002Fsub>(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>4\u003C\u002Fsub>(PO\u003Csub>4\u003C\u002Fsub>)\u003Csub>4\u003C\u002Fsub>], a new species, its crystal structure and relation to vauxite and montgomeryite. \u003Ci>American Mineralogist\u003C\u002Fi>,  61 (1-2) 5-11 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM61\u002FAM61_5.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":103,"year":104,"html":105,"doi":11},16966389,2005,"(2005) Olmsteadite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Folmsteadite.pdf' class='refpdflink'>\u003C\u002Fa>",[107],{"id":108,"source_url":109,"license_code":110,"credit_html":111,"title":112,"description":113,"author":114,"original_width":115,"original_height":116},18085,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=145788587","CC BY 4.0","David Hospital, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=145788587\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Olmsteadite.jpg","A outstanding reddish single crystal of the very rare niobium-tantalum mineral olmsteadite from the type locality in South Dakota (Big Chief Mine, Keystone, Glendale, Pennington County, South Dakota, United States of America). Ex Vandenbroucke Museum collection from Waregem, Belgium.","David Hospital",568,379,[118],{"id":119,"url":120,"label":121,"formula":122,"spacegroup":123,"year":100},10153,"\u002Fcif\u002F10153.cif","Moore 1976","(Nb.59 Ta.41) Fe2 K P2 O12 H4","P b 21 m",[125,126],"IMA1974-034","Olmsteadiet",[128,132,137,140,143],{"lang":129,"names":130},"ca",[131],"Olmsteadita",{"lang":133,"names":134},"de",[135,136],"IMA 1974-034","Olmsteadit",{"lang":138,"names":139},"eu",[131],{"lang":141,"names":142},"fr",[7],{"lang":144,"names":145},"it",[7],"Q1284099",{"history":11,"applications":11}]